Question

explain the acidity and basicity with increasing or decreasing order of ph​

Answer 1

As the pH diminishes, the acidity is greater. When the pH increases, the acidity is lesser. Thus, the basicity increases.

Answer 2

Answer:

As the pH diminishes, the acidity is greater. When the pH increases, the acidity is lesser. Thus, the basicity increases

Explanation:

Acidity is the extent to which a substance will donate a proton/hydrogen ion. Substances with high acidity will donate a proton easily while substances with low acidity will rarely donate protons and in presence of more acidic substances, accept a proton. For example, hydrochloric acid will easily donate protons to water like so (water acts as a base in this case):

HCl (aq) + H2O (l) → Cl- (aq) + H3O+ (aq)

Basicity is the extent to which a substance will accept a proton/hydrogen ion. An example of a strongly basic substance is sodium hydroxide, which will accept a proton from water (or any other ‘acid’) like so:

NaOH (s) + H+ (l) → Na+ (aq) + OH- (aq)

Alternatively, this can be written as:

NaOH (s) → Na+ (aq) + OH- (aq)

Alternatively, the Lewis definition defines acids as substances which accept an electron pair and bases as substances which donate an electron pair.